Identify incoming three-phase lines: .
Not officially, of course. Officially, Chapter 7 was titled “Emergency Override & Phase Synchronization.” But the old-timers had another name for it: The Hot Page. gmr32b phase controller manual hot
Result: If the phase is correct, the relay closes, allowing the motor to start. If there is a fault, the relay opens and kills the power to the motor starter. Most GMR-32B models feature LED status indicators: Identify incoming three-phase lines:
If the input power supply is abnormal, the GMR32B will de-energize its relay to cut off power to the load. of course. Officially